Title :
Magnetic properties of Co-Fe electrodeposited alumite films
Author :
Arai, K.I. ; Kang, H.W. ; Ishiyama, K.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
11/1/1991 12:00:00 AM
Abstract :
The magnetic properties of alumite film in which Co-Fe alloy is electrodeposited are investigated with regard to the alloy composition and the geometric structure of the magnetic films. The Co-Fe particles electro-deposited in the alumite film are single-phase alloy particles. The Co-Fe alloy electrodeposited films with small pore diameter (150 Å) have a large maximum magnetic energy product (BHmax) of about 1.44 MGOe due to the high coercive force, high saturation magnetization, and good squareness of the M-H curve. The magnetic properties of the Co-Fe electrodeposited alumite film of the composition of 34 at.% Co were as follows: Hc =2700 Oe and Mr/Ms=0.90. It is concluded that the Co-Fe alloy electrodeposited film shows good potential for perpendicular magnetic recording media of magnetic rotary encoders
Keywords :
cobalt alloys; coercive force; electrodeposits; encoding; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic hysteresis; magnetic recording; magnetic thin films; Co-Fe alloy; Co-Fe electrodeposited alumite films; CoFe-AlxOy; alloy composition; coercive force; geometric structure; hysteresis; large maximum magnetic energy product; magnetic anisotropy; magnetic films; magnetic properties; magnetic rotary encoders; perpendicular magnetic recording media; saturation magnetization; Aluminum; Coercive force; Extremities; Magnetic anisotropy; Magnetic films; Magnetic materials; Magnetic properties; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization;
Journal_Title :
Magnetics, IEEE Transactions on
